EP2052793A1 - Système et procédé de purification d'une conduite de bière, par exemple dans un système de distribution. - Google Patents

Système et procédé de purification d'une conduite de bière, par exemple dans un système de distribution. Download PDF

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Publication number
EP2052793A1
EP2052793A1 EP07075915A EP07075915A EP2052793A1 EP 2052793 A1 EP2052793 A1 EP 2052793A1 EP 07075915 A EP07075915 A EP 07075915A EP 07075915 A EP07075915 A EP 07075915A EP 2052793 A1 EP2052793 A1 EP 2052793A1
Authority
EP
European Patent Office
Prior art keywords
conduit
beer
cleaning liquid
electrolysis cell
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07075915A
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German (de)
English (en)
Inventor
Leonardus Franciscus Henricus Vaessen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP07075915A priority Critical patent/EP2052793A1/fr
Publication of EP2052793A1 publication Critical patent/EP2052793A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages

Definitions

  • the invention relates to a system for cleaning a beer conduit, for instance in a beer tap installation. Such a cleaning must take place very regularly since diverse micro-organisms establish themselves in the beer conduit, and this can cause flavour deterioration.
  • bio-film The formation of a bio-film is a natural process which follows a set pattern.
  • the bio-film consists of a wide variety of micro-organisms which develop over the course of several days or weeks.
  • the micro-organisms form complex relations with each other in a matrix of polysaccharide.
  • a bio-film is a three-dimensionally organized structure of one or more organisms which adhere to the conduit surface. Due to a precise relative placing each organism has its own position in the bio-film. This relative placing is determined particularly by mutual metabolic dependency between the different organisms.
  • the bio-film can be regarded as a small ecosystem which adapts to its environment.
  • the bio-film is substantially is distinguished from the individual micro-organisms by its ability to adapt to its environment.
  • the adhesion process starts with the deposition of polysaccharides and glycoproteins. These first layers increase the chance of adhesion of micro-organisms. Some of the micro-organisms then adhere to the surface. If micro-organisms remain in contact with the surface long enough, they develop different structures which eventually result in a permanent connection to the surface.
  • the final phase of the formation of a bio-film is the formation of polysaccharide compounds (the matrix) in which micro-organisms are incorporated. This matrix also comprises other constituents, such as minerals, bacteria, nutrients and so on.
  • the growing bio-film forms a basis for the adhesion and growth of new micro-organisms. All micro-organisms can in principle form a bio-film.
  • micro-organisms adhere and grow much more rapidly on a rough surface than on a smooth surface.
  • the object of the invention is an efficient method of cleaning beer conduits which is inexpensive, which requires little interruption of the operation of the beer tap installation and/or which enhances a long lifespan of the beer tap installation.
  • the system according to the invention comprises for this purpose means for degrading crystalline calcium oxalate deposit in the beer conduit and/or preventing the formation thereof, in addition to means for killing micro-organisms which can result in the deterioration of beer, such as S.cerevisiae, E.coli, Klebsiella pneumonia, Lactobacillus brevis and Lactobacillus buchneri.
  • the system comprises a coil which is mounted round the conduit, a first electronic circuit which is connected to the coil, which circuit is adapted to generate an alternating electromagnetic field in a liquid such as beer or a cleaning liquid flowing through the conduit in order to degrade and discharge crystalline calcium oxalate deposit (CaC 2 O 4 ⁇ nH 2 O) present on the conduit wall in the beer conduit and/or prevent the formation thereof, and preferably an electrolysis cell with electrodes which can be connected to the conduit and through which cleaning liquid can flow, or which is situated in a storage tank for cleaning liquid, which storage tank is connected to the beer conduit by means of a pump, and a second electronic circuit which is connected to the electrolysis cell, which electronic circuit is adapted to switch the electrolysis cell on and off in order to generate sodium hypochlorite (NaClOH) in the cleaning liquid in order to kill and discharge micro-organisms present on the conduit wall.
  • a first electronic circuit which is connected to the coil, which circuit is adapted to generate an alternating electromagnetic field in a liquid such
  • the invention results in a saving for the user of the beer tap, since less beer is lost and there are no external cleaning costs, and in the advantage for both the beer producer and beer tap user that the quality of the beer remains constant and good.
  • the invention contributes to a longer lifespan of the beer tap installation.
  • the quantity of chemicals is also reduced compared to conventional cleaning methods, which is better for the environment and whereby possible environmental legislation can be complied with more readily.
  • the invention makes use of the insight that crystalline calcium oxalate is deposited on the inner wall of the beer conduits during use of beer tap installations, thereby creating a rough surface and further facilitating the formation of bio-film. Removing this crystalline calcium oxalate deposit and preventing its creation achieves that only little bio-film is formed.
  • This small quantity of bio-organisms can then be killed easily by means of a cleaning agent with a very low concentration of sodium hypochlorite. This concentration is so low that the cleaning agent can be made from a simple salt solution by means of electrolysis. It is hereby no longer necessary to feed a highly concentrated bactericidal agent to the conduit system.
  • the system preferably comprises a storage tank for cleaning liquid which is connected by means of a pump to the electrolysis cell and the beer conduit.
  • the cleaning liquid preferably comprises at least 10 g/l NaCl, more preferably at least 18 g/l NaCl, still more preferably at least 24 g/l NaCl and, after it has been treated by the electrolysis cell, preferably at least 1 ppm, more preferably between 2 and 10 ppm, still more preferably between 4 and 8 ppm NaClOH.
  • the electrolysis cell is preferably connected close to the start of the conduit.
  • the electrolysis cell consumes a power between 24 and 240 W during the cleaning.
  • Cleaning preferably takes place each time for at least 10 minutes, more preferably at least 20 minutes.
  • cleaning can take place not only by allowing cleaning liquid to flow through the conduit but also by filling the conduits with (stationary) cleaning liquid.
  • a small quantity of cleaning liquid is driven through the beer conduit at substantially regular intervals or the conduit is filled with cleaning liquid for a shorter period of time, wherein the intervals last between 15 and 90 minutes, preferably between 20 and 40 minutes.
  • the coil is preferably also arranged close to the start of the conduit, preferably within 2 m to 3 m of the control box. During the cleaning the coil consumes a power of preferably at least 1 W, more preferably at least 5 W, still more preferably at least 10 W.
  • the coil preferably comprises at least 1 m, more preferably at least 2 m of electrically conductive wire.
  • the coil preferably comprises 11 to 22 windings round the beer conduit. In the preferred embodiment the coil operates continuously, i.e. the first electronic circuit with the coil generates an alternating electromagnetic field substantially permanently during use of the beer tap installation.
  • the invention further relates to a method for cleaning a beer conduit, for instance in a beer tap installation, wherein a coil is mounted round the conduit, wherein a first electronic circuit is connected to the coil, by means of which circuit an alternating electromagnetic field is generated in a liquid flowing through the conduit, such as beer or a cleaning liquid, in order to degrade and discharge crystalline calcium oxalate deposit (CaC 2 O 4 ⁇ nH 2 O) present on the conduit wall and/or prevent the formation thereof, wherein an electrolysis cell is connected to the conduit and cleaning liquid is carried therethrough, or wherein an electrolysis cell is placed in a storage tank for cleaning liquid and wherein a pump pumps the cleaning liquid into the beer conduit, and wherein a second electronic circuit is connected to the electrolysis cell, which electronic circuit switches the electrolysis cell on and off in order to generate sodium hypochlorite (NaClOH) in the cleaning liquid in order to kill and discharge micro-organisms present on the conduit wall.
  • a first electronic circuit is connected to the coil, by means
  • a system for cleaning a beer conduit 1 in a beer tap installation comprises an electromagnet consisting of a coil 2 which is mounted around conduit 1 and a first electronic circuit 3 connected to coil 2.
  • Circuit 3 is adapted to generate an alternating electromagnetic field in the beer flowing through conduit 1.
  • the system further comprises an electrolysis cell 4,5, which is connected to the conduit and through which cleaning liquid 8 can flow, and a second electronic circuit 6 connected to the electrolysis cell.
  • Electronic circuit 6 is adapted to switch the electrolysis cell on and off in order to generate sodium hypochlorite (NaClOH) in the cleaning liquid.
  • the system further comprises a storage tank 7 for cleaning liquid 8. Storage tank 7 is connected to electrolysis cell 4 and beer conduit 1 by means of a pump 9.
  • electrolysis cell 4,5 is situated in storage tank 7 and sufficient sodium hypochlorite is formed in storage tank 7 before pump 9 is activated.
  • An electromagnet is used to remove crystalline calcium oxalate deposit and to prevent deposition thereof in a beer conduit.
  • This electromagnet treats the beer in beer conduit 1 in accordance with a non-chemical method and produces a pulsating current in a wire which forms coil 2 and which is wound round the conduit. This pulsating current creates a magnetic field in the passing beer.
  • the effect hereof is that the crystalline calcium oxalate particles cake together to form larger particles and form a soft substance instead of a hard stone layer adhered to the surface.
  • An optimal operation of the electromagnet is obtained at a flow speed of 2.3 m/s.
  • a beer conduit with coil and a beer conduit without coil were tested in a practical situation for three months as specified in the instructions for use.
  • the two beer conduits had substantial crystalline calcium oxalate deposits on the inner wall.
  • the two beer conduits were viewed with an endoscope.
  • the beer conduit with coil was practically free of crystalline calcium oxalate deposits, while the beer conduit without coil had a thick layer of crystalline calcium oxalate deposits on the inner wall.
  • an electrolysis cell which is arranged in a cleaning conduit which is connected to the beer conduit or which is disposed in a storage tank for cleaning liquid.
  • a pump drives through the electrolysis cell a 24 g/l NaCl water solution present in a storage tank.
  • Sodium hypochlorite is herein produced by means of electrolysis at a low direct voltage of 12 V and a current strength of a maximum of 20 A between the electrodes of the electrolysis cell.
  • Sodium hypochlorite also referred to as active chlorine, kills a large number of different micro-organisms. After it has done its disinfecting work it disintegrates into the original constituents NaCl and water.
  • the method has been tested on five different micro-organisms which could cause beer deterioration, i.e.
  • hypochlorite concentration is no higher than 10 ppm.
  • the required contact time with hypochlorite in concentrations below 10 ppm was therefore investigated.
  • Test tube tests showed that the micro-organism which is most difficult to kill by means of hypochlorite is the S.cerevisiae, also known as beer yeast or baking yeast.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Cleaning In General (AREA)
EP07075915A 2007-10-24 2007-10-24 Système et procédé de purification d'une conduite de bière, par exemple dans un système de distribution. Withdrawn EP2052793A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07075915A EP2052793A1 (fr) 2007-10-24 2007-10-24 Système et procédé de purification d'une conduite de bière, par exemple dans un système de distribution.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07075915A EP2052793A1 (fr) 2007-10-24 2007-10-24 Système et procédé de purification d'une conduite de bière, par exemple dans un système de distribution.

Publications (1)

Publication Number Publication Date
EP2052793A1 true EP2052793A1 (fr) 2009-04-29

Family

ID=39166794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07075915A Withdrawn EP2052793A1 (fr) 2007-10-24 2007-10-24 Système et procédé de purification d'une conduite de bière, par exemple dans un système de distribution.

Country Status (1)

Country Link
EP (1) EP2052793A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013034869A3 (fr) * 2011-09-06 2013-07-25 Cambridge Scientific Solutions Limited Procédé et appareil de traitement de conduits
CN108325976A (zh) * 2018-01-17 2018-07-27 张冰清 一种医疗用试管消毒清洗装置
RU2680073C1 (ru) * 2018-04-13 2019-02-14 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет", (ДГТУ) Способ обеззараживания жидких сред
GB2606022A (en) * 2021-04-23 2022-10-26 Dempa Holdings Ltd Treating a fluid conduit
WO2024089420A1 (fr) * 2022-10-25 2024-05-02 Dempa Holdings Ltd Composition de poudre exempte de phosphate et exempte de chlore

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1171068A (en) * 1967-09-26 1969-11-19 Richard Eifert Wirtschaftspruf Improvements in or relating to the Treatment of Dispersions.
US3679556A (en) * 1967-09-26 1972-07-25 Richard Eifer Wirtschaftsprufu Device for treating disperse systems
WO1994007790A1 (fr) * 1992-09-25 1994-04-14 Clive Barnes Procede de prevention de la croissance d'agents contaminants dans des conduites de biere
EP1046611A1 (fr) * 1997-11-12 2000-10-25 David Leslie Middleton Dispositif et procede permettant d'empecher la propagation bacterienne et d'eliminer les bacteries dans un tube servant au passage d'une boisson.
US7033481B1 (en) * 2004-02-04 2006-04-25 Bioionix, Inc. Electroionic processing system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1171068A (en) * 1967-09-26 1969-11-19 Richard Eifert Wirtschaftspruf Improvements in or relating to the Treatment of Dispersions.
US3679556A (en) * 1967-09-26 1972-07-25 Richard Eifer Wirtschaftsprufu Device for treating disperse systems
WO1994007790A1 (fr) * 1992-09-25 1994-04-14 Clive Barnes Procede de prevention de la croissance d'agents contaminants dans des conduites de biere
EP1046611A1 (fr) * 1997-11-12 2000-10-25 David Leslie Middleton Dispositif et procede permettant d'empecher la propagation bacterienne et d'eliminer les bacteries dans un tube servant au passage d'une boisson.
US7033481B1 (en) * 2004-02-04 2006-04-25 Bioionix, Inc. Electroionic processing system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013034869A3 (fr) * 2011-09-06 2013-07-25 Cambridge Scientific Solutions Limited Procédé et appareil de traitement de conduits
GB2494417B (en) * 2011-09-06 2015-04-15 Cambridge Scient Solutions Ltd Method and apparatus for treating conduits
CN108325976A (zh) * 2018-01-17 2018-07-27 张冰清 一种医疗用试管消毒清洗装置
RU2680073C1 (ru) * 2018-04-13 2019-02-14 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет", (ДГТУ) Способ обеззараживания жидких сред
GB2606022A (en) * 2021-04-23 2022-10-26 Dempa Holdings Ltd Treating a fluid conduit
WO2022223971A1 (fr) * 2021-04-23 2022-10-27 Dempa Holdings Ltd Traitement d'une conduite de fluide
WO2024089420A1 (fr) * 2022-10-25 2024-05-02 Dempa Holdings Ltd Composition de poudre exempte de phosphate et exempte de chlore

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